IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: persian17 on June 08, 2009, 10:15:23 am

Title: Physics Paper 1 question
Post by: persian17 on June 08, 2009, 10:15:23 am

Anyone know why the answer is B not D? isnt beta just an electron?

Title: Re: Physics Paper 1 question
Post by: astarmathsandphysics on June 08, 2009, 10:18:43 am

Yes a beta particle is an electron. An electron is emmited
n>p⁺+e^-so the proton number goes up by one. The mass of proton and neutron are the same so the mass doesnt change. it is B

Title: Re: Physics Paper 1 question
Post by: IGSTUDENT on June 08, 2009, 10:19:29 am

When Beta particle is emitted 1 neutron is split into 1 proton and one electron. Electron escapes and hence 1 proton is added and 1 neutron lost.

Title: Re: Physics Paper 1 question
Post by: IGSTUDENT on June 08, 2009, 10:20:30 am

Quote from: astarmathsandphysics on June 08, 2009, 10:18:43 am

Yes a beta particle is an electron. An electron is emmited
n>p⁺+e^-so the proton number goes up by one. The mass of proton and neutron are the same so the mass doesnt change. it is B

Excellent explanation

Title: Re: Physics Paper 1 question
Post by: Fouad93 on June 08, 2009, 10:29:37 am

which year is that question